I am going to assume you meant the "first trophic level" of the ecosystem. The first tropic level of an ecosystem is made up of producers, so the answer is C, Acorns.
Both enzymes and antibodies are both Proteins
It would B I with a small A next to it along with a lowercase i. So, IAi but the A would be small like exponents are in math.
Answer:
e. the amino acids serine, histidine, and aspartate
Explanation:
Chymotrypsin is a digestive proteolytic enzyme secreted in the duodenum by the pancreas. It is a member of the serine proteases with active sites containing serine, histidine, and aspartate which it uses to cleave through hydrolysis (addition of a molecule of water) the c-terminus of aromatic amino acid tryptophan, tyrosine, and phenylalanine on peptide chains. Its hydrophobic pockets makes it suitable for aromatic amino acids.
Answer:
These specialized groups are collectively called the classification of living things. The classification of living things includes 7 levels: kingdom, phylum, classes, order, families, genus, and species . The most basic classification of living things is kingdoms.
Explanation:
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